<html>
  <head>
    <style>
      button {
        height: 40px;
        margin: 0 5px 0 5px;
      }
      button:hover {
        cursor: pointer;
      }
    </style>
  </head>
  <body>
    <div id="root"></div>
    <pre id="game-of-life-canvas"></pre>
  </body>
</html>
